Datasheet Texas Instruments LM9044VX/NOPB

LM9044
www.ti.com SNOSBP4D – FEBRUARY 1995 – REVISED MARCH 2013 LM9044 Lambda Sensor Interface Amplifier
Check for Samples: LM9044 FEATURES DESCRIPTION The LM9044 is a precision differential amplifier
specifically designed for operation in the automotive
environment. Gain accuracy is specified over the
entire automotive temperature range (-40В°C to
+125В°C) and is factory trimmed after package
assembly. The input circuitry has been specifically
designed to reject common-mode signals as much as
3V below ground without the need for a negative
voltage supply. This facilitates the use of sensors
which are grounded at the engine block while the
LM9044 itself is grounded at chassis potential. An
external capacitor on the RF pin sets the maximum
operating frequency of the amplifier, thereby filtering
high frequency transients. Both inputs are protected
against accidental shorting to the battery and against
load dump transients. The input impedance is
typically 1.2 MΩ. 1 2 Normal Circuit Operation Specified with Inputs
up to 3V Below Ground on a Single Supply.
Gain Factory Trimmed and Specified over
Temperature (В±3% of Full-scale from -40В°C to
+125В°C) …